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Sederhankan dulu fungsinya
f(a,b,c)
= (a²bc³)⁴ . 9ab²c / (a²bc²)² . a⁶b⁵c⁹
= a⁸b⁴c¹². 9 a¹b²c¹ / a⁴b¹c⁴ . a⁶b⁵c⁹
= 9 a⁸⁺¹⁻⁴⁻⁶. b⁴⁺²⁻¹⁻⁵ . c¹²⁺¹⁻⁴⁻⁹
= 9 a⁻¹b⁰c⁰
= 9 / a
Ingat bahwa :
(a^m)^n = a^(m x n)
a^m . a^n = a^(m+n)
a^m / a^n = a^(m-n)
a^-m = 1/a^m
a⁰ = 1
Jadi
f(2,5,3) = 9/2 = 4,5